Finding the Fourth Proportional to 118,930.75, 164,129.42 and 65,217.84
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Solution
The fourth proportional to 118,930.75, 164,129.42 and 65,217.84 is: 90,003.35
Step by Step Solution
- Step 1: Write the proportion equation
118,930.75 : 164,129.42 = 65,217.84 : x - Step 2: Convert to fraction form
118,930.75/164,129.42 = 65,217.84/x - Step 3: Cross multiply
118,930.75x = 164,129.42 × 65,217.84 - Step 4: Simplify right side
118,930.75x = 10,704,166,252.85 - Step 5: Solve for x
x = 10,704,166,252.85/118,930.75 - Step 6: Final answer
x = 90,003.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.